Posts made by rexx

@timsworkshop

rafts are great when needed did you look around to see if you can mate a generic one up for the Hemera? show us a pic maybe we can help
try it with some fan on initially...

why not just use the always on pins then? select vin for ps voltage or 12v to that pin set i think the plug is the same just move it over to it

ok much playing with but i got it Q ended up to be Q1.25 and the switching is just like the oem original now and only +/-.5c spread the R was set to R0.030 which auto tune suggested R0.027 was close but the D was suggested to D159 by auto tune and D28 worked best for me

thank you to all whom guided me here the D,R and Q was the issues i was having and is a ok now!

@engikeneer what is a reasonable time to autotune i am at phase 3 but has been for 3.15 hrs and counting for a total of 4.5 hrs

when i send M303 it sais i am on 4 of 4 measuring but did not say it started to like 1,2,3 until i sent M303...

@engikeneer thank you i have stopped the tuning and have set the pwm to Q5 in the M950 and restarted the tune once back to ambient temperature again

@zapta i tried S0.10 in M307 but seen that M950 is now where Q is used to set HZ so i am trying M950 Q50 M307 S1.00

S0.01 did light the ssr up but is not on,not heat at this but only faint dim leds on the out and ssr so i will try Q50 in the M950 and see tuning....

@gloomyandy
on it i will have a look

thank you

@zapta this is absolutely great thank you
what would my M307 look like with a chamber thats slow but keeps temps and is insulated well, what you would try first ?
is this only put in config.g correct?

is it 0.1 i am going to try it at 10 hz is 20 times a second still not to much?? i will try it!

Cheers

@tinchus same here.. did you ever find out how or just buy an old duet2 and dont update it??

@hackinistrator its switching an SSR the HZ dont matter no...? as long as it within the spec of the SSR 3-32vdc 15mA control side
the switching side is mains power 6A 120 VAC (on or off) no ramping capability except pwm from the control side no?
if it means the frequency of switching i am in...but it says HZ hertz frequency usually 60 hz as is 120vac it is at 60 hz mains power which would not be adjustable without a VFD and/or winding's before it's heater

or maybe i am not understanding how this could benefit me other ways maybe algorithms at low HZ switch differently??

Do i need an M141 for a chamber and does it change the heating rhythm??

it also looks like you dont have any/much cooling on it or elephants foot compensation but try another slicer if you have active cooling working
what is the material?

what slicer did you use... try another i had issues with cura and flow infills and over all flow rates which made the z seam or start stop bad like this
super slicer reprint for me was all it was
as for cura infill flow i used was 89% and the total flow rate to 98% fixed this on ASA prints and others

usually if the Z seems are bulging flow or retractions are out but speeds do play apart here too!

@droftarts thank you kindly

Cheers

hello all, does anyone have experience with a mains powered chamber heater
1.my set point are not kept close
2. autotune is not seem to help (2plus hrs)
3. it faults at times during start heating as the temp is not seen to rise but it is.(faults in 3 min)

the attachment shows the chamber is rising the yellow line is core heater temp and was tried 2x thus the humps and fault areas

must be the tuning algorithm......... or SOP's...lol

110 eyes no clues .................................anyone??

Does anyone have a mains powered chamber with a thermocouple/thermistor in the actual chamber that could share their config with me?

@droftarts could you explain why the M950 before the M307 changes and what it does or is not just the ordering and would this apply to a chamber>

768 sst liquifier available should anyone need it Model and support
msquared does them too but$$$$$
if you want to print many diffrent filament dont use this

why

1 they can't be cleaned (carbon from different materials inside induces carbon buildup more)
2. they are standard not metric
3. they wear out and are not a consumable
4.the oem extruders may not work with duet that i know and the extruder gears are likely to have excessive lash between the gears any how unless you know a julery guy that can replace them ...or a machinist willing to but is not advised without previous experiences doing so they are small and would need super precise way to produce the gears
5. the bend (90 deg) at the top of the liquifier tube is a flaw in my opinion as it is in the melt zone not before and naturally back purges a small blob around the liquifiers entrance causing even more resistance (not one of ssys better liquifiers for sure 768)

the best SSYS liquifiers are in my opinion in the titans, fortus MC and few others

straight no 90 deg bends 100watt 90-120dvc aside powered oem
the old 200watt ones on the sst and bst are way over kill for that tiny aluminum block with stainless like thin tubes but then again maybe not 120vdc i cannot remember..
(disregard if the 1200 are diff.. oh they are different chit my bad i remember now you have spring actuator from model to support side where the bst and sst have the same set height)

my question is does it feed from the top or the back hose like mine (never got to work on a 1200 only mc up)

loving all the SSYS conversions I am not alone thanks for sharing everyone